Converting mannuel rack to P/S rack

Ok so yesterday i find out my rack and pignion has to be changed and iv desided to convert over to P/S since i allready have most of the parts for my 96 civic CX HB.

So i have
new P/S rack and pignion
P/S pump and bracket
ordered P/S hose since one of the ones i had was cut
P/S reservoir

Now i know and i have seen this around the net but the P/S oil pressure switch i cant seem to be able to find any info or even get a picture on what it looks like on google.Will i need this to complete the P/S system ? If so im 90% sure i have a P2P ECU obd2a and from reading it does seem to support P/S as i know i will need to add wires to my ecu.

Does anyone know anything or can help me out i would like to know what parts i need before i start taking the car apart and having a car in the drivway for 2 weeks sitting there.